Not in all cases so easy. But the answer is obvious - because microphones cannot 'hear' everything that ear can. Not to mention what happens to the signal down the chain.
DR yes (although there are easily available recordings with DRs of 20, or even better, of real music, and when I play them I still know they are recordings), but other things as well, such as ambient cues.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.